/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

package org.apache.jmeter.gui.action;

import java.awt.event.ActionEvent;
import java.util.HashSet;
import java.util.Set;

import javax.swing.JOptionPane;
import javax.swing.tree.TreePath;

import org.apache.jmeter.gui.GuiPackage;
import org.apache.jmeter.gui.tree.JMeterTreeNode;
import org.apache.jmeter.testelement.TestElement;

/**
 * Implements the Remove menu item.
 */
public class Remove implements Command {
	
    private static final Set commands = new HashSet();

    static {
		commands.add(ActionNames.REMOVE);
	}

	/**
	 * Constructor for the Remove object
	 */
	public Remove() {
	}

	/**
	 * Gets the ActionNames attribute of the Remove object.
	 * 
	 * @return the ActionNames value
	 */
	public Set getActionNames() {
		return commands;
	}

	public void doAction(ActionEvent e) {
		ActionRouter.getInstance().actionPerformed(new ActionEvent(e.getSource(), e.getID(), ActionNames.CHECK_REMOVE));
		GuiPackage guiPackage = GuiPackage.getInstance();
		JMeterTreeNode[] nodes = guiPackage.getTreeListener().getSelectedNodes();
		TreePath newTreePath = // Save parent node for later
		guiPackage.getTreeListener().removedSelectedNode();
		for (int i = nodes.length - 1; i >= 0; i--) {
			removeNode(nodes[i]);
		}
		guiPackage.getTreeListener().getJTree().setSelectionPath(newTreePath);
		guiPackage.updateCurrentGui();
	}

	public static void removeNode(JMeterTreeNode node) {
		TestElement testElement = node.getTestElement();
		if (testElement.canRemove()) {
			GuiPackage.getInstance().getTreeModel().removeNodeFromParent(node);
			GuiPackage.getInstance().removeNode(testElement);
		} else {
			String message = testElement.getClass().getName() + " is busy";
			JOptionPane.showMessageDialog(null, message, "Cannot remove item", JOptionPane.ERROR_MESSAGE);
		}
	}
}
